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Inventories (Tables)
3 Months Ended
Mar. 31, 2021
Inventories [Abstract]  
Schedule of Inventories

Inventories consisted of the following (in thousands):


 March 31, 2021 
 December 31, 2020 

Finished goods

$ 736
$ 661
Components   93
  109

Total

 $  829
 $  770